Door and hoist mechanism for hatchways



July 13 1926.

DOOR AND H0151' MECHANISM F'oR A. F. FLECK Filed Nov. l5, 1923 m Ki@ HATCHWAYS 3 Sheets-Sheet 1 l f ATTORNEY July 13, 1926. 1,592,351

A, F. FLECK DOOR AND Hors'r MECHANISM Foa HArcHwAYs A Filed Nov. 1:5, 19'23 5 sheets-sheet 2 ugllgmun [Hmmm 43 n Y ATTORNEY my 13, 1926. l lzm' A2 F. FLECK DOOR AND HOIST MECHANISM FR HATGHWAYS Filed Nov. l5, 1923 3 Sheets-Sheet :5

TTORNEY Patented July 13, 1926.V

UNITED STATES vPATENT OFFICE.

AUGUST r. FLECK, or WEST ENGLEWOOD, NEW Jnnsni. `issie-Non To Wasrinnnn al GRANGER, ING., OF NEW YORK, N. Y., A COBPORATCN OF NEW YORK.

noon AND no'rsr Mncnnn'isivr non nArc'HwAYs.

Application filed November 13, 1923. Serial No. 674,541.'

This invention relates to hatchway doors and hoist-s and control andl operating means therefor. Y f

The inventionV has been particularly Worked out in connection with sidewalk hatchways or hoistways in which doors are provided for closing the vopening and operating means is mounted in the hatchway for raising the doors and the'hoist. With this l0 type of structure it is highly 'desirable and is often required .by the authorities-that an alarm be sounded when the doors are opened to warn pedestrians and to prevent their being injured. One of the objects of the invention is to providedoor opening means and locking and vcontrol means therefor so constructed and arranged that an alarm will be sounded before the doors commence to open and during their opening movement and also during the closing movement.l

Another object of the invention is to provide means for securely retaining the doors and the guards carried thereby in position after the doors have been opened.

Another object of the invention is to provide hoisting meansso constructed and arranged that the same hoisting means will operate successively to open the doors and raise the hoist. n

Further objects of the invention will appear from the following specification taken in connection with the drawings, which form a part of this application, and in which n Fig. 1 is a sectional elevation of a hatchway showing the doors in open position and the hoist in its lower position.

Fig. 2 is a sectional elevation similar to Fig. 1, but showing the hoist in elevated position, this view also illustrating the doors in dotted lines in closed position'.

Fig. 3 is a perspective View showing the construction of the doors and the guards carried thereby. Y

Fig. 4 is-a sectional eleva-tion on an enlarged scale taken substantially on line #le-4 of Fig. 2.

Fig. 5 is an enlarged sectional elevation showing the lock pin for the mast ofthe hoist. v

Fig'. 6 is al view similar to Fig. 5, but showing a modified construction of releasing means for the lock pin.

Fig. 7 is an enlarged elevational view partly in section showing the reverse sidek of the panel or casing on which are mounted in' the sheavesaround which the hoisting cablepasses and also showing ythe locking means for the doors and the alarm switch, and

Fig. 8V is a/sectional elevation taken sub-v stantially on line 8 8 of Fig. 7.

The invention brieliydescribed consists of i i tive mechanism for opening the doors is also constructed and arrangedto raisethe'hoisting mechanism or mastcarrying this mechanism and operates first to raise the doors and subsequentlyfto: raise the mast. L In the reverse direction, the mast is ylowered first and thereafter the doors are closed.- Further details of the invention will `appear from .the following description.

In kthe embodiment of the invention illustrated, there isshown a hatchway 10 havingchannel irons 11 mounted at thefupper end thereof and doors'12 and 13 pivoted at 14 in the channel irons 11. Referring particularly to Fig. 3,'it will be seenthat the doorlB has a guard 15 rigidlyy securedv thereto at 16 and braced at 17. The door 12 has hinged thereto at 18 a` guard 19 which as shown at 2O overlaps the rigid guard 15. The guard 19 is normally maintained 'in engagement with the guard l5 as shown in full lines in Fig. 3 by springs 21.

A channel iron25 is secured to one wall `vof the hatchway and a mast 26 for the hoist is mounted in the channel iron in guideways formed by guide strips 27. vAn angle iron 28 is bolted to one-edge of thel channel iron y as' shown 'at 29 and there is secured to this angle iron a' panel or plate 8() having along one edge a recess 31 for receiving the outer edge of one sideof the channel iron. A

bracket 82 at the lower end of the plate 80 and the casing 42 is slidably mounted in a slot 43 formed in the plate 30. As shown in Figs. 7 and 8, the pin 41 extends through the slot and through an elongated bar 44 which is secured to the casing 42 by means of bolts 45. From the showing particularly in Fig. 8, it will be seen that an extension 46 of the casing 42 extends through the slot 43 and that an extension 47 at the lower' end of the casing 42 also extends through the slot and is secured to the bar. by a bolt 48.

The pin 41 also has mounted thereon a sleeve 49 on which are mounted links 50 and 51 which are connected at their upper ends respectively to the doors 12 and 13.

`When the doors are in their closed position as shown in dotted lines in 2, the sheave 40, easing 42 and parts carried thereby are disposed in the lower portion of the slot 43. The upward movement of the casing 42 and Sheave40 is limited by adjustable stop in the form of a bolt 52 which is threaded into the upper end of the casing 42 and is adapted to engage the lower end 58 of the sheave cover 38 of the sheave 55. A lock nut 54 is mounted on the bolt 52 for locking this stop bolt in adjusted position.

A lock pin 60 is slidably mounted in a bracket 61 secured to the back face of the plate 30 (looking at Fig. 2) and a spring 62 normally urges this lock pin into locking position. The pin 60 is adapted to engage or seat in a recess 63 formed in one edge of the bar 44 as shown in dotted lines in Fig. 2. The lock pin has a cross pin 64 extending through the shank 65 thereof and this cross pin is adapted to be engaged by a hifurcated wedge 66 slidably mounted on the bracket 61 and normally held in retracted position bya spring 67. A chain 68 is secured to the lower end of the wedge for facilitating the manipulation thereof.

ln addition to the function of locking the doors in closed position. the stop pin 60 and shank 65 thereof are also adapted to control an alarm circuit since aswitch 70 which is included in the circuit of an alarm device, such as a bell 71 shown in 1, is disposed in alinement with the shank 65. When the lock pin is retracted from its locking position, the shank 65 engages the switch 7 O and closes the alarm circuit thereby sounding the alarm 71. Attention is called to the fact that the alarm is sounded y before the doors commence to open.

returned to its initial or locking position as the door has been moved upwardly to a sufficient-l extent to clear this locking pin. Then the locking pin is so moved, the alarm switch 70 will be automatically opened by the springs 73.

rlhe door opening mechanism comprises in this instance a cable having one end secured to a winch 81 mounted on the channel iron 25. This cable passes upwardly over the sheave 37 under the sheaye 40 over the. sheaves 35 and 36 and downwardly from the sheave 36 to the lower end of the mast where it is secured to the mast asshown at 82.

Means is provided for automatically locking the mast in its raised position. This means comprises a mast lock pin 85 slidably mounted in a bracket 86 secured by bolts 87between the two angle irons which form .the mast 26.' The mast lock pin.r as shown in Fig. comprises a plunger 88 having an annular groove 89 adjacent one end thereof and an annular shoulder 90. A spring 91 is seated in a recess 92 forinedin the bracket 86 and engagesthe shoulder 90. The plunger 88 is hollow and has slidalely mounted therein a pin 93 having a head 94 and a shank 95. A spring 96 is mounted in the hollow plunger and engages the head 94 of the pin 93. A cross pin 97 extends through the shank 95 and when the mast is locked, the pin 97 seats against the end of the hollow plunger 88.

An opening 98 is formed in the channel iron 25 and is so located that when the mast is in its raised position, the mast lock pin 85 will be disposed opposite this opening. lVhen the mast is raised, the end of the plunger 88 will snap through the opening 98 under the pressure of the spring 91. The mast 26 and hoisting means carried thereby will thereupon' be lowered slightly until the lower edge. of the opening 98 isl seated in the lower portion of the groove 89 of the plunger. ln order to recase the mast when the hoist is to be lowered. the lock pin 93 is retracted and the cross pin 9T is moved to the dotted line position shown in 5. This will place the spring 96 under tension sufficient to overcome the action of the spring- 91 and when the operator rotates the winch 81 sufficiently to lift the mast slightly, the lock pin 85 will snap out of the opening 98 and -the mast will be released.

In order to provide for releasing 'he mast when the mast has been raised to a position out of reach of the operator. ther is shown in Fig. 6 a slidable wedge 100 noi mally retracted by a spring 101 and adapted to engage the cross pin 97. r1 chain 102 is secured to the wedge 100 and when the chain is pulled. the wedge will engage the cross pin and retract it whereupon the lock will be 'released in the manner already described.l

In order to secu-re the doors in their open position, a bar 105 is pivoted at 10o to a bracket 107 carried by the mast-26. This bar normally engages a guide 108 but when the mast is raised, the bar swingsdownwardly by gravity to the position shown in Fig. 2 in which position it engages the door 18.

Any suitable hoisting meansk may be car'- ried by the mast 26 and in the embodiment of the invention vshown a gear operated winch 110 is mounted on the upper end of the mast.

The construction above described operates as follows. Assuming that the doors-are in closed position as shown ink dotted ylines in Fig. 2, the operator will iii-st manually retract the'door lock pinv 60 by pulling downwardly on the 4wedge 66. This retraction of the locking pin also closes the Valarm switch and causes the alarm to sound before the doors commence to open. Then the door lock pin has been retracted, the winch 81 is operated and winds the cable 80. This winding up of the cable will iirst shorten the loop which passes around the vertically movable sheave l0 lifting this sheave to the full line position shown in Fig.

2 from the dotted line position shown therein. As this sheave and the casing i2 and parts carried thereby are lifted, the links 50 and 51 will raise the doors 12 and 13 to open position. During this openingl movenient, the door lock pin 60 will be maintained in retracted position by its engagement with the edge 72 of the bar 4A until the pin ridesro of the lower end ofthev bar and is then returned to its normal position by the spring 62. After the doors have been raised to open position, continued operation of the winch and shortening of the cable 8O will lift the mast 26 from the position shown in Fig. 1 to the position shown in Fig. 2. Then the mast reaches the upper limit of its movement or its raised position. the mast loch pin 85 will snap into the opening 98 in the channel iron 25 and the mast will be thereby locked in raised position. As the mast is raised, the arm '105 will ride on the guide 108 and will eventually swing down to the position shown in Fig. 2, thereby locking the doors in open position. To close thedoors and lower the mast, the shank of the pin 93 is retracted, placing the spring 9G under tension and the mast is lifted slightly until the' head ofthe plunger 88 recedes from the opening 98 in the channel iron 25. The mast will then move down by gravity as the cable 8O isL slacked off by the winch and when the mast has reached its lower position, the sheaye 40 and parts connected thereto will move downwardly in the slot 43 of the plate 80, thereby permitting the doors to close.

Although ceri-ain specific .embodiments korf the invention have been `particularly shown and' described, rit will be nnderstood thatth-e invention is capable of modification and that chan-ges in the "construction and in the arrangement of the various cooperating paits maybe made without departing from the spirit or scope of the invention, as fer:- pressed inthe following claims.

L"illhat I claim is:

1. In combination, hatchway doors movable to openand close the hatchway. a hoist movable through kthe hatchway opening and commonineans operable successively to first open the doors and then raise ysai-d hoist.

.2.' In combination, hatchway doors movable to lopen and close the liatchway, a hoistl movable through the "hatchwa'y opening and common means, including acable and winch, operable successively to first open the doors and then raise said hoist.`

' 8. Inv combination, hatchway doors Imovable to open and close the lhatchway, a hoist movable through the hatchway opening and common means, including a cable, a vertically movable sheave and means for winding up said cable, operable successively to 1first open the doors and then raise said ioist.

4. In combination, hatchway doors movable to open and close the hatchway, means for opening said doors including a vertically movable sheave connected to said doors in `all positions thereof and means for raising saidsheave. n K

5. In combination,.hatchway door-s movable `to open and close the hatchway, means for opening said doors including a vertically movable sheave connected to` said doors in all positions thereof and means, including a cable and winch, for raising said sheave. Y

6. In combination, hatchway doors movable to open and close the hatchway, means for opening said doors including a vertically movable slieave connected to said doors in all positions thereof, means for raising said sheave, and stop means for limiting the movement of lsaid sheavein both directions.

7. In combination, hatchway doors movable to open and close the hatchway, means for opening saidv doors including` a vertically 'movable sheave connected to said doors in all positions thereof, means for raising said sheave, and an alarm switch controlled by the movement of said sheave.

8. In combination, hatchway doors movable to open and closed position, a hoist,

means for opening said doors and raising lll) said hoist and means carried by the hoist for holding the doors in open position, said holding means being automatically engageable with the door as the hoist is.raised and disengageable with the door as the hoist is lowered.

10. In combination, hatchway doors movable to open and closed position, a. hoist, means for opening said doors and raising said hoist and pivoted means carried by the hoist for holding the doors in open position.

ll. In combination, hatchway doors movable to open and closed position, a hoist, means for opening said doors and raising :said hoist and pivoted means carried by the hoist for holding the door-s in open position, said holding means being automatically engageable with the door as the hoistV is raised and disengageable with the door as the hoist is lowered.

l2. In combination, hatchway doors lnovable to open and closed position, a hoist, and means for opening said doors and raising said hoist, said means including a movable sheave connected to the doors, a cable passing beneath said sheave and having one end connected to the hoist and take-up means for said cable.

13. In combination, hatchway doors movable to open and closed position, a hoist movable through the hatchway opening, means Jfor opening the doors and raising said hoist and automatically operable locking means for limiting the upward movement of the hoist.

la. In combination, hatchway doors movable to open and closed position, a hoist movable through the hatchway opening, means for opening the doors and raising said hoist and automatically operable locking means for limiting the upward movenient 01"' the hoist, said locking means being so constructed and arranged that the Weight of the hoist will ain in retaining the hoist in locked position.

ln Witness whereof. I have hereunto set my hand this 5th day of November, 1923.

AUGUST F. FLEGK. 

